<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div>
    <h1>微博注册</h1>
  <input type="text" v-model="user.username" placeholder="用户名"><br>
  <input type="password"   v-model="user.password" placeholder="密码"><br>
  <input type="text"   v-model="user.nickname" placeholder="昵称"><br>
  <input type="button" value="注册" @click="insert()">
</div>
<script src="https://cdn.bootcdn.net/ajax/libs/axios/0.21.1/axios.min.js"></script>
   <script src=" https://cdn.staticfile.org/vue/2.2.2/vue.min.js"></script>
     <script>
       let v=new Vue({
         el:"body>div",
         data:{
           user:{
             username:"",
             password:"",
             nickname:""
           }
         },
         methods:{
           insert(){
             axios.post("/user/insert",v.user).then(function (r) {
               if(r.data==2){
                 alert("用户名存在")
               }else {
                 alert("注册成功")
                   location.href="/";
               }
             })
           }
         }
       })

     </script>
</body>
</html>